Fairly sure i am addicted to L prime glass!!!!!! Decided to sell my !7-40 L for a 24mm F1.4, was trying to decide between a 35mm L and a 24mm L, but after looking at the lenses I already have I felt the 35mm was too close to my 50mm so i opted for the 24mm. I struggled with the decision to sell the 17-40 but looking back on the Landscape shots I've taken at the wide end most of them have been around the 24mm mark anyway, so took the plunge and am now looking forward to the arrival of the 24mm. I really want to try this lens also for some street photography, I've seen some street work done with this lens and I'm quite impressed. Hope i made the right choice.